Gas-mixer.



s. H. HALE.

GAS MIXER.

APPLICATION FILED AUG. 5. 1914.

Patented Feb. 9,1915.

STEPHEN n. HALE, or nEonEsnA, KANSAS.

GAS-MIXER.-

Specification of Letters I'atent.

Patented net. a iota Application filed August 1914. Serial No. 855,210.

To, all whom it may concern Be it known that I, STEPHEN H. HALE, a citizen of the United States, residing at Neodesha, in the county of Wilson,- State of Kansas, have invented certain new and useful Improvements in Gas-Mixers; and I do v hereby declare thefollowing'to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the Sa e- This invention relates to an air and gas mixing device, and is in the nature of an improvement on my Patent #970,919, pate'nted Sept. 20, 1910.

The device is particularly adapted for use in connection with the burning of natural gas, artificial gas and other gaseous materials, which are required to be mixed with air in order to obtain the proper combustion and the greatest number of heat units as is the device in the aforementioned patent.

Theobject of the invention is to provide an improved device wherein there/will be two positive shut-ofl's, so that when the gas is shut off the possibility of the gas escaping will be practically obviated;

' A further object of the invention is to so construct the device that. the-second shutoff will be opened in such mannerthat the full; pressure of gas will be behind the same at this time.

' A still further object of the invention is to provide means on the main shut-ofi cock Wlnch will seatthe said cock' properly,'irrespective of the wear thereon.

With these'and other objects in view, such as will appear as the description progresses, my invention comprises the combination and arrangement of parts as set forth in tailing within the scope of the appended claims.

Referring to the drawing: Figure l is a side elevation of my device" 2'is a plan yiew. of the device. Fig. 3 is a ongitudinal sectional view, showing the cooks in their closed positions. Fig. 4, is a longitudinal sectional Viewv taken on a vertical plane showing the cooks in their open positions. I Zfig. 5 is a horizontal sectional yiew. showing the cocks'in their open positions. Fig. 6 183 section on line 66 of Fig. 3.

Referring to. the drawings by reference. characters whereinlike parts are indicatedby, like characters throughoutv the several views: the device comprises a valve casing lfhaving a longitudinally extending tapered bore 2 and a transversely extending passage 3, the said passage 3 communicating with a chamber i in an outwardly extending 11oz.-

zle 5 The said nozzle 5 extends into and is secured within a pipe 6 which has cutaway portions forming openings 7 and on the end of which is a collar 8 which is threaded so as to be attachable to burner or the like;

Bevolubly mounted inthe tapered bore 2 in the casing 1 is a tapered valve plug 9 which has a transversely extending slot 10. therethrough, the said slot being adapted to be brought into registration with the transversely extending passage 3 in the casing so that gas may blow, through the said passage and through the chamber 4 in the nozzle 5 and is. so arranged that when the plug 9 is turned in the proper position the passing of gas through the said passage 3 will be prevented. In the lower end of this plug 9 is detachably mounted a pin 11 which extends through a washer 12 on the lower end ofthecasing 1. A coil spring is located beneath and bears against the lower end of. the casing 1 at one of its ends and at its other end against the head of the pin 11 so that the plug 9 is normally pulled downwardly and will therefore be seated tightly within the casing 1, irrespective of the wear of the said plug. The plug is so operated that the slot 10. will be in alinement with the passage 3 in the casing 1, the gas passing through the said passage and through the chamber l in the nozzle 5 and is projected from the end of the said nozzle and into the collar 8. As the gas passesthe opening's 7 the suction created thereby draws air through the said openings and thus efiectively mingles the air with the gas.

sleeve 13 is slidably mounted on the pipe 6 and encircles the same and this pipe is connected to the handle 14; of the plug 9 by means of a pivotally. supported link l5, so

' upon the pipe 6 that when the plug 9 is turned to let gas into the nozzle the sleeve 18 will be moved to partially open the cutaway portion 7 so as to allow a proportionate amount of air to pass therethrough.

As the passage 3 is gradually uncovered so the openings 7 will be gradually uncovered and as the flow of gasis increased so will the amount of air passing'therethrough be proportionately increased' Extending longitudinally of the plug 9 and across the slot 10 is a pin 16 on which is pivotally mounted an outwardly extending rod 17 on the end of whichis a valve head 18 adapted to seat on a valve seat 19 in the end of the nozzle 5. The valve 18is so arranged that when the plug 9 in the casing 1 is in such position as to close the passage 3 the said valve 18 is in place in the valve seat 19 and thus the escape of gas through the nozzle 5 is doubly prevented.

- The chamber 4 in the nozzle 5 is of considerably greater diameter than the rod 17 and thus the said rod may have pivotal movement within the said chamber a about the valve 18 as the pivot.

When the plug 9 closes the passage 3 and 1 the valve 18 is in place on its'seat 19 and it vious to the uncovering of the end of the nozzle or the unse'ating of the valve 18 and the gas' therefore rushes into the nozzle 5 and maintains full pressure behind the said valve 18 before the "valve is opened and when movement of the handle 14- is continued the valve l8 is removed from its seat and the gas inlthe nozzle 5 is ejected from the end or the said nozzle under full pressure and consequently the gas passes the openings 7 under full pressure immediately upon the opening of the; valve 18. This is especially beneficial because of the fact that it allows the operator to getthe highest degree of temperature obtainable from the gas as soon as the gas is ejected from the nozzle 5.

From the foregoing description it may readily be seen that l have provided a gas mixer wherein the gas and air will be effectively mixed and the amount of air mixed with the gas will be proportionately increased or decreased as the amount of gas is increased or decreased. 1 have constructed the device so that there are two valves, one in the pipe and one in the nozzle which will both be seated at the same time to prevent the escape of mamas gas. 1 have further so constructed the device that the stop cock or valve in the supply pipe will open slightly in advance of the opening of the valve in the nozzle so that the full pressure of' gas will be behind the said valve in the aforementioned nozzle before the same is unseated and thus upon the unseating of the same the gas will be ejected from the nozzle under full pressure.

While I have illustrated and described a particular embodiment of my invention, it is merely for the sake of illustration and I do not wish to be limited to this particular embodiment as it isobvious that numerous changes may be made within the details of construction thereof without departing from the spirit of the'invention and without exceeding the scope of the claims.

What is claimed is: a

1, In an air and gas mixing device, a valve casing, a plug rotatably mounted in said casing, resilient means for retaining said plug in its seat, a nozzle connected to and extending from said'casing, a pipe encircling said nozzle and having cutaway portions at the free end thereof, said plug having a slot extending transversely therethrough, a rod pivotally secured to said plug adjacent the periphery thereof and extending longitudinally within the said nozzle, and a valve head on the end of said rod arranged to close the said nozzle, the said plug and said valve head being so arranged with relation to each other that the valve head is unseated subsequently to the opening of the plug.

2. In an an and gas mixing device, a pipe having openings in the periphery thereofp a nozzle extended into and secured within the said ipe, a valve casing secured to the end of t c said nozzle, a plug mounted in said casing, a valve head slidably mounted within the said nozzle and adapted to close 7 the end ofv the same, and a rod secured to the said head and pivotally connected to the said plug at the periphery thereof.

'3. In an air and gas mixing device, a pipe having openings therein, 'means for par tially covering the-openings, a nozzle secured within the said pipe, a valve head slidably mounted in the said nozzle and adapted to close the end of the same, a valve casing secured to the other end of the nozzle and having a tapered plug therein, and means connected to said valve head and said plug constructed and arranged so that the open ing in the valve casing will be uncovered slightly previous to the unseating of the aforementioned valve head.

' 4:, In an air and gas mixing device, a pipe having a plurality of peripherally arranged openings therein, a nozzle mounted within the said pipe and extending longitudinally the nozzle, and means operatively connected 10' thereof, a valve casing secured to one end to the plug to partially cover the openings of the said nozzle, a plug turnably mounted of the afore-mentioned pipe.

in said casing and having a slot extending In testimony whereof, I afiix mysignatransversely therethrough, a pin Within the ture, in the presence of two Witnesses: said plug adjacent the periphery thereofla STEPHEN H. HALE. rod secured to said pin andextending longie Witnesses U W tudinally of the nozzle, a head on the end E. K. HALE,

of said rod and adapted to close the end of W. W. VSCLINETTE. 

